-4.32% is the change from 950 to 909
Calculation steps:
[( 909 - 950 ) ÷ 950] x 100 = -4.32%
Formula
Percentage change = [(909 - 950) / 950] x 100
Subtract the new number by the original number
909 - 950 = -41
-41 ÷ 950 = -0.0431578947368421
-0.0431578947368421 x 100 = -4.32%